<!DOCTYPE html>
<html>
<head>
	<meta charset="UTF-8">
	<title>WebSocket Chat</title>
</head>
<body>
<script type="text/javascript">
	var socket;
	if (!window.WebSocket) {
		window.WebSocket = window.MozWebSocket;
	}
	if (window.WebSocket) {
		socket = new WebSocket("ws://localhost:8080/ws");
		socket.onmessage = function(event) {
			var ta = document.getElementById('responseText');
			ta.value = ta.value + '\n' + event.data
		};
		socket.onopen = function(event) {
			var ta = document.getElementById('responseText');
			ta.value = "连接开启!";
		};
		socket.onclose = function(event) {
			var ta = document.getElementById('responseText');
			ta.value = ta.value + "连接被关闭";
		};
	} else {
		alert("你的浏览器不支持 WebSocket！");
	}
	function send(message) {
		if (!window.WebSocket) {
			return;
		}
		if (socket.readyState == WebSocket.OPEN) {
			socket.send(message);
		} else {
			alert("连接没有开启.");
		}
	}
</script>
<form onsubmit="return false;">
	<h3>WebSocket 聊天室：</h3>
	<textarea id="responseText" style="width: 500px; height: 300px;"></textarea>
	<br>
	<input type="text" name="message"  style="width: 300px" value="Welcome to https://t5750.github.io">
	<input type="button" value="发送消息" onclick="send(this.form.message.value)">
	<input type="button" onclick="javascript:document.getElementById('responseText').value=''" value="清空聊天记录">
</form>
</body>
</html>